Home / 14,040.87-19,379.24-12,920.04

Finding the Fourth Proportional to 14,040.87, 19,379.24 and 12,920.04

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Solution

The fourth proportional to 14,040.87, 19,379.24 and 12,920.04 is: 17,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,040.87 : 19,379.24 = 12,920.04 : x
  2. Step 2: Convert to fraction form
    14,040.87/19,379.24 = 12,920.04/x
  3. Step 3: Cross multiply
    14,040.87x = 19,379.24 × 12,920.04
  4. Step 4: Simplify right side
    14,040.87x = 250,380,555.97
  5. Step 5: Solve for x
    x = 250,380,555.97/14,040.87
  6. Step 6: Final answer
    x = 17,832.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.